Fullstack Developer; Frontend Specialist – Svelte

About Decathlon

Since 1976, Decathlon has been on a mission: "Moving People through the Wonders of Sport." Our global family includes 105,000 teammates, 2,000 stores in 70 countries, and 85 product brands. Our Swiss project started in 2016 and has rapidly grown to nearly 1,000 employees across 30 stores, supported by 5 key divisions (Logistics, E-commerce, Finance, HR, etc.). Decathlon Switzerland is scaling its digital products to provide seamless experiences for our users—whether they are renting high-end mountain gear, managing B2B partnerships, or creating content through our internal tools.

We believe in autonomy, technical excellence, and the power of clean, reusable code.

We are looking for a Fullstack Developer with a "Frontend-First" mindset to join our engineering team. You will be a key player in architecting and building modern web applications that power our most strategic Swiss initiatives.

Your primary focus will be on Svelte, creating high-performance, reusable component libraries that will serve as the foundation for multiple platforms.

• Rental solution:
  Scaling our brand-new platform to make sports equipment more accessible through the circular economy.
• B2B platform:
  Developing professional interfaces for our corporate and club partners.
• Internal CMS and Tools:
  Building the "engine room" that empowers our internal teams to manage content and operations efficiently.

• Architect and build: Design and implement robust frontend architectures using Svelte.
• Component excellence: Develop a library of high-reusable frontend components to ensure UI/UX consistency across all platforms.
• Fullstack delivery: Maintain and extend our backend services, primarily built as Cloud Functions (GCP) using FastAPI (and occasionally Flask for legacy services).
• Collaborate: Work closely with UX/UI designers and product managers to translate complex requirements into elegant technical solutions.
• Quality: Advocate for best practices in testing, documentation, and performance optimization.